Clearances around the heater
- Check the manufacturer's minimum clearance to combustible walls.
- Keep rugs, drying clothes, and kindling well clear of the firebox.
- Make sure the hearth pad is intact, level and the correct size.
Firebox and seals
- Door rope/seal is intact and compresses with a slight resistance.
- Glass is free of cracks (a star crack means it must be replaced).
- Baffle plate is in place and not warped or sagging.
- Firebricks aren't crumbling or pieces missing.
Flue and cowl
- External cowl is intact, with no missing or rusted parts.
- No daylight visible through cracks in masonry chimneys.
- Flue is clear of nests, leaves, or visible obstructions.
- No staining (water marks, soot streaks) on the ceiling around the flue.
Detectors and alarms
- Working smoke alarm on every level, tested within the last month.
- Consider a carbon monoxide alarm in the same room as the heater.
- Replace alarms every 10 years — write the date on the unit.
Fuel and operation
- Use only seasoned hardwood — never treated timber or rubbish.
- Run a hot fire daily to keep the flue clear of condensate.
- Avoid extreme overnight damping where you can.
- Always close the door fully when the fire is unattended.
Annual professional service
Some checks need experience and the right tools — internal flue inspection, creosote grading, seal replacement, baffle and firebrick assessment. Book that once a year, ideally before winter. Note the date so next year is easy to remember.
A note on safety: chimney and flue issues can become serious quickly. When in doubt, leave the heater unlit and call a qualified sweep — a short visit beats guessing.